I installed a ST1000 last week. I elected to install in cockpit coaming instead of seats. So I needed a 6" extension to reach from coaming to tiller. i then installed plug in in cockpit locker, so autohelm is always plugged in. I hung two light straps, from the seat hinge area of the cockpit locker, and the ST1000 hangs like a hammock.
So all I do is turn on 12v power,then put autohelm in place, and push Auto.
Works like a charm. Sorry no pics.